Comment 35 for bug 2004555
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| Gorka Eguileor (gorka) wrote Re: [ussuri] Wrong volume attachment - volumes overlapping when connected through iscsi on host | #35 |
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Let me summarize things:
1. The source of the problem reported in this bug is that Nova has been doing something wrong since forever. I've been bringing this up for the past 7 years, and every single time we end up in the same place, nova giving priority to instance deletion over everything else.
2. There are some things that os-brick can do to try to detect when Nova doesn't do its job right, but this is equivalent to a taxi driver asking passengers to learn to fall because the car is not going to stop when they want to get off. It's a lot harder to do and it doesn't sound all that reasonable.
3. There is an attack vector that can be exploited and it's pretty easy to do (I've done it locally) but it's separate from the issue reported here and it hasn't existed for as long as the that one. I would resolve this in a different way than the workaround mentioned in #2.
Seeing as we are back to the same conversation of the past 7 years, we'll probably end up in the same place, so I'll just do my best to resolve the attack vector and also introduce code to resolve Nova's mistakes.